// This is a third party JavaScript library from
// http://webfx.eae.net/dhtml/xmlextras/xmlextras.html
// i.e. This has not been written by ThoughtWorks.

//<script>
//////////////////
// Helper Stuff //
//////////////////

// used to find the Automation server name
function getDomDocumentPrefix() {
  if (getDomDocumentPrefix.prefix)
    return getDomDocumentPrefix.prefix;
  
  var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];
  var o;
  for (var i = 0; i < prefixes.length; i++) {
    try {
      // try to create the objects
      o = new ActiveXObject(prefixes[i] + ".DomDocument");
      return getDomDocumentPrefix.prefix = prefixes[i];
    }
    catch (ex) {};
  }
  
  throw new Error("Could not find an installed XML parser");
}

function getXmlHttpPrefix() {
  if (getXmlHttpPrefix.prefix)
    return getXmlHttpPrefix.prefix;
  
  var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];
  var o;
  for (var i = 0; i < prefixes.length; i++) {
    try {
      // try to create the objects
      o = new ActiveXObject(prefixes[i] + ".XmlHttp");
      return getXmlHttpPrefix.prefix = prefixes[i];
    }
    catch (ex) {};
  }
  
  throw new Error("Could not find an installed XML parser");
}

//////////////////////////
// Start the Real stuff //
//////////////////////////


// XmlHttp factory
function XmlHttp() {}

XmlHttp.create = function () {
  try {
    if (window.XMLHttpRequest) {
      var req = new XMLHttpRequest();
      
      // some versions of Moz do not support the readyState property
      // and the onreadystate event so we patch it!
      if (req.readyState == null) {
        req.readyState = 1;
        req.addEventListener("load", function () {
          req.readyState = 4;
          if (typeof req.onreadystatechange == "function")
            req.onreadystatechange();
        }, false);
      }
      
      return req;
    }
    if (window.ActiveXObject) {
      return new ActiveXObject(getXmlHttpPrefix() + ".XmlHttp");
    }
  }
  catch (ex) {}
  // fell through
  throw new Error("Your browser does not support XmlHttp objects");
};

// XmlDocument factory
function XmlDocument() {}

XmlDocument.create = function () {
  try {
    // DOM2
    if (document.implementation && document.implementation.createDocument) {
      var doc = document.implementation.createDocument("", "", null);
      
      // some versions of Moz do not support the readyState property
      // and the onreadystate event so we patch it!
      if (doc.readyState == null) {
        doc.readyState = 1;
        doc.addEventListener("load", function () {
          doc.readyState = 4;
          if (typeof doc.onreadystatechange == "function")
            doc.onreadystatechange();
        }, false);
      }
      
      return doc;
    }
    if (window.ActiveXObject)
      return new ActiveXObject(getDomDocumentPrefix() + ".DomDocument");
  }
  catch (ex) {}
  throw new Error("Your browser does not support XmlDocument objects");
};

// Create the loadXML method and xml getter for Mozilla
if (window.DOMParser &&
  window.XMLSerializer &&
  window.Node && Node.prototype && Node.prototype.__defineGetter__) {

  // XMLDocument did not extend the Document interface in some versions
  // of Mozilla. Extend both!
  //XMLDocument.prototype.loadXML = 
  Document.prototype.loadXML = function (s) {
    
    // parse the string to a new doc  
    var doc2 = (new DOMParser()).parseFromString(s, "text/xml");
    
    // remove all initial children
    while (this.hasChildNodes())
      this.removeChild(this.lastChild);
      
    // insert and import nodes
    for (var i = 0; i < doc2.childNodes.length; i++) {
      this.appendChild(this.importNode(doc2.childNodes[i], true));
    }
  };
  
  
  /*
   * xml getter
   *
   * This serializes the DOM tree to an XML String
   *
   * Usage: var sXml = oNode.xml
   *
   */
  // XMLDocument did not extend the Document interface in some versions
  // of Mozilla. Extend both!
  /*
  XMLDocument.prototype.__defineGetter__("xml", function () {
    return (new XMLSerializer()).serializeToString(this);
  });
  */
  Document.prototype.__defineGetter__("xml", function () {
    return (new XMLSerializer()).serializeToString(this);
  });
}